Valve-stem packing.



'A. 1?. LANE. VALVE STEM PEGKING. APPLICATION FILED SEPT. 20, 1919.

' 991,329. Patented May 2,1911.

'em loyed sa of a the gland 4 is UNITED STATES To all whom it may concern:

Be it known that I, ARTHUR P. LANE, a

citizen of the United States, residing at Denver, in the county of Denver and State of Colorado, have invented new and useful Improvements-in Valve Stem Packing, of which the following is a specification.

The present invention is designed primarily to provide a peculiar packing between a stem or rod and the gland or like part in which the same is mounted to reciprocate so as to insure a tight joint to prevent lateral play and toobviate excessive wear.

With the aforementioned objects in view, and such other advantages as may result from the novel construction and arrangement of theparts, the invention consists of the peculiar structural features which hereinafter will be more particularly set forth and which are illustra d in the accompanying drawing, in which Figure 1 is a central longitudinal section of the head of a cylinder or valve chest provided with a packing embodying the invention. Fig. 2 is shown in Fig. 1.

Referring to the drawing the numeral 1 designates a valve chest or cylinder in which a va ve or piston 2 is arran d to operate. The end of the chest or c lin means of a head 3, whic 'is provided wit a gland 4 of greater length than ordinarily i gland having an opening 5 ar er bore than usual to receive the stem or r 6 of the valve or iston. The outer portion of the stem 6 is re need, as indicated at 7, 'a shoulder 8 being formed at the base of the reduced portion. The opening 5 of diameter of the stem 6 and is of uniform size throughout its length. A packing head 9 is mounted upon the inner portion of the reduced art 7 of the valve stem and is connut 10, which is-secured to the stem in any desired way. The inner end of the reduced part 7 of the valve stem is enlarged a trifle to receive the packinghead 9 and the nut 10. The packing head 9 is formed in its Specification of Letters Patent.

Application filed September 20, 1910. Serial No. 582,884.

side members of the bracket.

an end view of the parts r is closed b considerably larger than theereon between the shoulder 8 and a Tingle-NT OFFICE.

aarmm r. name, or DENVER, conoaano. VALVE-STEM micxme.

outer surface with a series of grooves in which packing of any kind is fitted to insure a tight joint between said packing head and the inner walls of the bore or opening 5.

In order to brace the, outer portion of the stem 7 guides are interposed between the outer end of the gland 4 and the reduced part of the valve stem. These guides consist of brackets 11 and rollers 12, the latter being grooved to conform to the diameter of the reduced part 7 of the valve stem. Each of the brackets 11 is of substantially U-form and the roller therefor is mounted upon a pin, which is supported at its ends in the Machine screws 13 serve to connect the brackets to the outer end of the gland 4. The brackets 11 are fitted into recesses 14 formed in the outer end of the gland.

When the parts are assembled it will be observed that the stem or'rod 6 is supported within the gland 4 at two oints, the one corresponding with the acking head 9 and the other with the gui es, thereby sustaining the stern against lateral stress and preventing any lateral play which would tend to provide a space between the stem and gland to permit escape of the motive medium or other fluid to be confined.

From the fore oing description, taken in connection with tlie accompanying drawing. the advantages of the construction and of the method of operation will be readily apparent to those skilled in the art to which the invention appertains, and while I have described the principle of operation of the invention, together with the device which I now consider to be the embodiment thereof, I desire to have it understood that the device shown is merely illustrative, and that such changes may be made when .desired as are Patented May 2, 1911.

within the scope of ,the claims appended hereto.

Having thus described is claimed as new, is-:-

1. In combination with a valve stem or rod, a gland having the opening the invention what of larlger diameter than said stem to receive the atter, means interposed between the stem and g o I o use the walls of the opening of the gland to the brackets and obtaining a bearing against 10 surea txght 'oifit,- and de means between. the sides of the said stem. the stem an' gland an secured to the lat- In testimon whereof I aflix my signature {er arllld commrsiingdgut1de rollers to bear in presence 0 two witnesses' 5, atera y-ega ,Sfll sem.

2. In-combination a gland, avalve stem or ARTHUR LANE rod mounted to lecl rocate within said Witnesses: gland, brackets secure to the outer end of FRANK A. Kmusn the gland and grooved rollers mounted in. J. A. Boss. 

